[Elecraft] KRX3 insatall

[Mike Reublin]

I don't have an L-P Pan.

Mike NF4L

On Oct 31, 2012, at 5:10 PM, ab2tc <ab2tc at arrl.net> wrote:

> Hi,
> 
> I have absolutely no dip in the center of my LP-Pan display and I have never
> heard anybody else having this problem either. The IF out port and the
> crystal filter bank are driven in parallel by a buffer amplifier that
> appears to be capable of driving both without gain loss due to the crystal
> filter load.
> 
> AB2TC - Knut
> 
> 
> Edward R Cole wrote
>> I built my K3/10 and installed the KRX3 with no issues of different 
>> audio levels.
>> 
>> BTW running both Rx with dual LP-Pan on MAP65v2.3 sw shows the audio 
>> level on a bar graph for each (when in diversity mode).
>> 
>> Two things were recently done to improve use of the 
>> LP-Pan:  1)  Enabling an open filter position in the K3 and KRX3 
>> eliminates gain "suck out" by roofing filter which is connected in 
>> parallel with the IF output jack.  It shows as a dip in gain on a 
>> panadaptor spectrum display at center freq.  2)  Installed 32.860 MHz 
>> xtal in LP-Pan which is 4x the IF freg of 8.215 MHz which eliminates 
>> the previous +6 KHz freq. off set in the display sw (thanks to Larry,
>> N8LP).
>> 
>> My 2m-eme dual-polarity adaptive receive system will get a work-out 
>> in this weekend's eme contest.  It extensively uses the dual-Rx 
>> diversity reception mode of the K3.
>> 
>> 73, Ed - KL7UW
> 
> 
> 
> 
> 
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